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Pope Saint Paul VI (3 April 1969): “Although the text of the Roman Gradual—at least that which concerns the singing—has not been changed, the Entrance antiphons and Communions antiphons have been revised for Masses without singing.”

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Views from the Choir Loft

Dr. Charles Weaver • Article Archive

Dr. Charles Weaver is on the faculty of the Juilliard School, and serves as organist and director of music at St. Mary’s Church in Norwalk, Connecticut. His research interests include the history of music theory and the theory of plainchant rhythm. He lives in Connecticut with his wife and four children.—Read full biography (with photographs).

Dr. Charles Weaver · February 27, 2023

An Interview on Mocquereau’s Method

I recently appeared on Square Notes, the Sacred Music Podcast to discuss some of the basics of Dom Mocquereau’s system of Gregorian rhythm. It’s impossible to give a full treatment to such a complex topic in a mere forty minutes, but I touched on a lot of the foundational ideas, with especial emphasis on the […]

Dr. Charles Weaver · January 26, 2023

What is the Tonic Accent?

We should define our terms. What makes a syllable accented, and what makes an accent a tonic accent?

Dr. Charles Weaver · December 8, 2022

Gregorian Rhythm Wars • “The Limits of History”

There’s nothing necessarily authentic about the “authentic” rhythm.

Dr. Charles Weaver · November 26, 2022

Gregorian Rhythm Wars • “On the Nuance Theory of Plainchant”

A brief historical survey of free rhythm in plainchant, as practiced from the modern monastic foundation of Solesmes (1833) to the present.

Dr. Charles Weaver · November 16, 2022

Gregorian Rhythm Wars • “Disputed Questions” (16 Nov 2022)

A few further thoughts on what ways of singing chant are “allowed.”

Dr. Charles Weaver · November 13, 2022

Gregorian Rhythm Wars • “Charlie’s First Response to Jeff” (13 Nov 2022)

Ostrowski, wishing to avoid fussiness, may justifiably refuse this invitation. But to argue, as he has, that these signs and the prayerful and aesthetic movements they embody are “illicit” is just wildly off the mark.

Dr. Charles Weaver · October 23, 2022

An Upcoming Concert in NYC

Announcing a concert next Saturday in honor of Christ the King.

Dr. Charles Weaver · October 9, 2022

The Solesmes Episema and Contemplation

Are we even singing the Solesmes rhythm at all?

Dr. Charles Weaver · September 29, 2022

Solmization from the Inside: Part 2

What can medieval and renaissance music pedagogy offer to us now?

Dr. Charles Weaver · September 12, 2022

Pre-Reformation Polyphony among the Recusants

What happened to all that polyphony once Catholicism became illegal?

Dr. Charles Weaver · August 26, 2022

PDF Download • Mocquereau on Trochee Trouble

This can seem like a dry topic, but it actually often deals with practical issues faced by every choirmaster who wants to promote plainchant.

Dr. Charles Weaver · July 23, 2022

Pothier Teaches Us to Sing an Antiphon

A look at Dom Pothier’s performance instructions for a communion antiphon reveals a great deal of complexity in this pre-Mocquereau interpretive approach.

Dr. Charles Weaver · May 26, 2022

Summer Courses in Sacred Music in New York

This summer, there are several interesting graduate-level courses on offer at St. Joseph’s Seminary in New York.

Dr. Charles Weaver · May 7, 2022

A Curious Rhythmic Detail in Tomorrow’s Jubilus

Occasionally the Solesmes rhythmic markings are surprising, as in one of tomorrow’s alleluias. Can we make sense of this?

Dr. Charles Weaver · January 16, 2022

The Communion of the Second Sunday after Epiphany

Today’s communion antiphon is a masterpiece of musical exegesis.

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Corpus Christi Watershed

President’s Corner

    “Sanctus VIII” • Organ Accompaniment
    A few days ago, I composed this organ harmonization for SANCTUS VIII. This Mass is traditionally called Missa de ángelis or “Mass of the angels.” In French, it is Messe de Anges. You can evaluate my attempt to simultaneously accompany myself on the pipe organ (click here) while singing the melody. My parish is currently singing this setting.
    —Jeff Ostrowski
    Music List • (5th Sund. Ordinary Time)
    Readers have expressed interest in perusing the ORDER OF MUSIC I’ve prepared for this coming Sunday, 8 February 2026, which is the 5th Sunday in Ordinary Time (Year A). If such a thing interests you, feel free to download it as a PDF file. You will probably notice it isn’t as ‘complete’ or ‘spiffy’ as usual, owing to some difficulties which took place this week.
    —Jeff Ostrowski
    PDF • “Communion” (5th Sunday in Ordin.)
    The COMMUNION ANTIPHON for this coming Sunday, 8 February 2026—which is the 5th Sunday in Ordinary Time (Year A)—is truly delightful. You can download the musical score completely free of charge. This text will be familiar to altar boys, because it’s PSALM 42. The Feder Missal makes the following claim about that psalm: “A hymn of a temple musician from Jerusalem: he is an exile in a heathen land, and he longs for the holy city and his ministry in the Temple there. The Church makes his words her own.”
    —Jeff Ostrowski

Quick Thoughts

    “Reminder” — Month of Febr. (2026)
    On a daily basis, I speak to people who don’t realize we publish a free newsletter (although they’ve followed our blog for years). We have no endowment, no major donors, no savings, and refuse to run annoying ads. As a result, our mailing list is crucial to our survival. It couldn’t be easier to subscribe! Just scroll to the bottom of any blog article and enter your email address.
    —Jeff Ostrowski
    PDF Chart • “Plainsong Rhythm”
    I will go to my grave without understanding the lack of curiosity so many people have about the rhythmic modifications made by Dom André Mocquereau. For example, how can someone examine this single sheet comparison chart and at a minimum not be curious about the differences? Dom Mocquereau basically creates a LONG-SHORT LONG-SHORT rhythmic pattern—in spite of enormous and overwhelming manuscript evidence to the contrary. That’s why some scholars referred to his method as “Neo-Mensuralist” or “Neo-Mensuralism.”
    —Jeff Ostrowski
    PDF • “O Come All Ye Faithful” (Simplified)
    I admire the harmonization of “Adeste Fideles” by David Willcocks (d. 2015), who served as director of the Royal College of Music (London, England). In 2025, I was challenged to create a simplified arrangement for organists incapable of playing the authentic version at tempo. The result was this simplified keyboard arrangement (PDF download) based on the David Willcocks version of “O Come All Ye Faithful.” Feel free to play through it and let me know what you think.
    —Jeff Ostrowski

Random Quote

[Speaking about the Silent Canon, with audible “per ómnia”] — “So in all such cases it is usual for the otherwise silent celebrant occasionally to sing a clause aloud, to show how far he has arrived.”

— Father Fortescue (pages 313-314) • “A Study of the Roman Liturgy”

Recent Posts

  • Pope Paul VI • “Sacrificium Laudis” (15 Aug 1966)
  • “Sanctus VIII” • Organ Accompaniment
  • PDF Download • Sanctus VIII Organ Accompaniment (“Mass of the Angels”)
  • Gorgeous Image of Monks Singing!
  • “Let the Choir Have a Voice” • Jeff Ostrowski’s Essay on Choral Music in the Catholic Mass

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